1results about How to "Avoid impedance" patented technology

This invention belongs to the field of batteries, specifically relating to an electrolyte and battery for improving the ultra-low temperature performance of lithium iron phosphate batteries. By adding specific film-forming additives and ultra-low temperature functional additives to the electrolyte, the low-temperature liquid state is maintained through the synergistic effect of fluoroethylene carbonate (FEC), 1-ethyl-3-methylimidazolium difluorophosphate, and 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide salt, thereby reducing the electrolyte viscosity. At the same time, it can form a weakly solvated sheath layer with lithium ions, significantly reducing the energy barrier required for lithium ions to desolvate at the negative electrode interface, reducing the SEI interface impedance, thereby promoting lithium ion transport and significantly improving the ultra-low temperature performance of lithium iron phosphate batteries.